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2 years ago

What is the arrangement of the modern periodic table based upon

Chemistry

1 answer:

nikitadnepr [17]2 years ago

4 0

Answer:

The modern table is a list of elements based on the number of protons in the nucleus.

Explanation:

That’s the positive charge of the nucleus. Then it is organised into rows and columns based on repeating patterns of chemical similarity within that series, other words “periodicity”. That is why it is called the periodic table.

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Determine the number of moles of C in each sample

stepan [7]

Explanation:

In $CH_4$ :

Given moles = 2.0 moles

1 mole of methane contains 1 mole of carbon and 4 moles of hydrogen

Moles of carbon in $CH_4=(2.0\times 1)=2.0 moles$

In $C_2H_6$ :

Given moles = 0.175 moles

1 mole of ethane contains 2 moles of carbon and 6 moles of hydrogen

Moles of carbon in $C_2H_6=(0.175\times 2)=0.35 moles$

In $C_4H_{10}$ :

Given moles = 4.21 moles

1 mole of butane contains 4 moles of carbon and 10 moles of hydrogen

Moles of carbon in $C_4H_{10}=(4.21\times 4)=16.84 moles$

In $C_8H_{18}$ :

Given moles = 24.5 moles

1 mole of octane contains 8 moles of carbon and 18 moles of hydrogen

Moles of carbon in $C_8H_{18}=(24.5\times 8)=196 moles$

7 0

2 years ago

Why do strong bonds exist between water molecules?

Alexeev081 [22]

Answer: they are held together by hydrogen bonds I believe

Explanation:

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2 years ago

Which of the following developments would most likely occur if average summer air temperatures in the Arctic increased by 4°C?

s344n2d4d5 [400]

Answer:

A. Increase in permafrost thickness

Explanation:

Climate warming (like of 4°C) would increase the active layer thickness (ALT) of permafrost, which can cause changes in the hydrological cycle, ecological processes, and carbon flux in cold regions.

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2 years ago

Which 3 characteristics are used to describe all waves, regardless of type? Check all that apply.

Dmitry [639]

Answer:

Frequency

Trough

Crest

Explanation:

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2 years ago

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MArishka [77]

Answer:

D. water

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2 years ago